Another good idea for using your reclaimed wool (or leftovers), is making house boots - a crocheted mixture of socks and slippers, which my daughter and I are using constantly. They are warm, soft and don't get lost under the table - and you can even drop them in the washing-machine from time to time.
For this latest pair of boots I used a reclaimed worsted wool yarn for the base and topped it with some fancy leftovers of fringe yarn - I even decorated them with a dear head which I cut out from a piece of brown felt.
End of summer, I crocheted these two pairs the same way - reclaimed yarn and leftovers again, however in some acrylic wool blends.
As usual, I didn't really have a pattern, but if you zoom up on the pictures, I think you get the idea:
Starting circular at the toes, crocheting a flat round for a couple of rows (put a marker at the beginning, so you can see where a new row starts).
At about 5 cm diam. increase less frequently, thus allowing the flat piece to curl up to a 'bowl' - when the 'bowl' covers your toes nicely (about 32 sts), stop increasing and proceed crocheting in rounds until you reach your ankle (about 13 cm medium female size).
Now leave a gap of about 12 cm in the front and work front and back rows, turning at the gap.
Continue until you've reached your heel (about 12 cm medium female size), split the back by working a couple of short rows to produce a rounded heel. Leave a long tail of your yarn to close up the heel with a few stitches from the inside of the boot.
If you like an open shoe, you could stop here, just crocheting a last row around - but I must say I do prefer crocheting a shaft, making it more like a boot - it looks 'younger' and less Granny-like - and I find it fits better on the foot as well!
So just go on crocheting for about 6 or more rows, skipping the corner stitches on both sides in each round. In the last row, crochet 15 chain sts for a loop at the back - this is great for hanging the boots, for putting them on - and it looks cool, too!
I used a 6 mm crochet hook and either worsted weight yarn or 2-3 strands of thinner yarn - but you take whatever you have and don't feel afraid to try it out!
A good idea would be, however, to divide your yarn into two similar heaps (you can put it on a scale) before you start, and to work both boots more or less simultanously - when you work without a pattern, this is to ensure that both boots will look the same in the end :-)!
(German summary: Noch eine nette und nützliche Art, seine Rest- oder Recyclingwolle zu verwenden, ist Haussocken- oder -stiefel zu häkeln. Das geht sehr einfach: ein Käppchen für die Zehen, dann gerade aus in Runden bis zur Fessel, aufgezogene Sohle in Hin- und Rückrunden bis zur Ferse, Arbeit teilen und ein paar verkürzte Runden häkeln, zusammennähen, Öffnung umhäkeln, bis ein Schaft entstanden ist, kleinen Henkel hinten mittig arbeiten.
Ein guter Tip ist aber, wenn man frei häkelt, daß man anfänglich die Wolle in zwei gleiche Teile aufteilt und die beiden Stiefel mehr oder weniger gleichzeitig arbeitet - damit sie am Ende auch wirklich gleich werden :-)!)